James eslee



UNITED VSTATES PATENT OFFICE.

JAMES ESLER, OF'BROOKLYN, NEW YORK.

COUPLING FOR SHAFTS OF BORING-TOOLS.

Specication forming part of Letters Patent No. 48,667, dated July 11, 1865.

To all whom 'it may concern:

Be it known that I, JAMES EsLER, of the city of Brooklyn, in the county of Kings and State of New York, have invented a cert-ain new and useful arrangement for retaining the ends of boring-tools used for boring tor oil or water in connection with each other 5 and I do hereby declare that the following is a full and exact description ot' the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, in which- Figure l is a vertical section, and Fig. 2 a transverse section taken through the line xm, Fig. l.

ln the ordinary construction of boring-rods for boring apertures in the earth for oil or water the different lengths of rods connected to and operating the boring and other necessary tools are secured together by male and female screws at their ends, as the bore is deepened,

anew rod being attached .by being screwed into or on the end ofthe last one. In the operation of boring, the boring-tool at the bottom of the series of boring rods, and therefore the whole of the said series, requires to be partially rotated at every lift of the rods, in order that the borer may strike at a di'erent point at each time of its depression. lt is found in practice that this change ot' 'position tends to and does unscrew partially the di'erent jointed rods, or some one or more of them, so that after a short time of use the lower or some portion of the lowersection is unscrewed, leavdinary manner) by a sleeve, as shown in the drawings, which slips over a circular enlargement on the ends of the rods, and which is retained in place on its lower end bya key pass' ing through the sleeve, and which has at its upper end a collar to retain the upper rod from being withdrawn from contact with the lower one.

A is the lower boring-tool, having a square forged upon it, B. Gis the upper boring-tool, having upon it a similar square to the other, the said squares being intended, primarily, to be used to fasten the two tools together by means of a wrench or other proper tool, the said boring-tools having in one enda male and in the opposite end a female screw, the said screw-threads being shown at D in Fig. 1.

E is a sleeve which ts over and upon the circular enlargement F, and which has upon its upper end the collar G. In the lower portion ot this sleeve is cut a passage-way for the key H, as shown in Fig. 2, the said -key keeping the lower section of the boring-tool from turning by passing across and against one of the square sides of the boring-tool A.

The collar G bears upon the upper part of the circular enlargement on the upper tool, C, so that when the sleeve is put in place over and upon the horin g-rods (after the rods are screwed together) and the key H is put in place the two rods cannot be disconnected without lirst taking out the key H. It' required in practice, the ends of the key H can be turned over, so that they will require to be cut ofi" at the outer end, to be withdrawn, and then a new key be put in place ot' the one thus destroyed.

What I claim as my invention, and desire to secure by Letters Patent, is- 4 Preventing the lower section of the boringrod A from turning away or being disconnected from the rod C by means of` the sleeve E and the key H, the said key passing through an aperture in said sleeve by and past one of the squares formed on said section A, as and for the purpose set forth.

JAMES EsLEa.

Witnesses:

FRANcIs S. Low, WM. A. LIGHTHALL.' 

